Download Android KitKat 4.4.2 stock firmware for Ippo or Eken Q8H / Q88 Pro tablet from here or here. Download Allwinner A23 firmware version from here.
Firmware details
Archive: a33_8723-8703_q8h_800x480_gc0309_gc0309闪光灯8600_0316
Image: a33_8723-8703_q8h_800x480_gc0309_gc0309闪光灯8600_0316.img
Archive size: 278 MB
Support: Allwinner A33 quad core
FW version: v2.0 / exdroid4.4.2_r2-a33-v2.0
Style: Q8H
Company: Allwinner
Pixels: 800 x 480
Build number: astar_y3-eng 4.4.2 KVT49L 20150316 test-keys
Caution: Please do not update firmware unless you know what you are doing, you really want it or it is absolutely necessary. Firmware updates may occasionally have bad results, like bricking your device, temporarily or permanently. The firmware update process is done entirely at your own risk. Before attempting to update the firmware, back up your data.
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